Umbreon-GX #142 from Sun & Moon is a rare card that currently sells for about $42.93 ungraded, with graded copies ranging from $42.50 at grade 7 to $700 at grade 10. TCGrader's AI has graded 5 copies of Umbreon-GX (Sun & Moon), averaging 8.3 overall. 40% scored 9 or higher, so a strong copy is achievable but far from guaranteed. A grade 10 copy sells for around $700, about 16× the $42.93 raw price, so high-grade copies are worth grading.